參數(shù)資料
型號: LP3971SQ-B410
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS
中文描述: 3-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC40
封裝: 5 X 5 MM, LLP-40
文件頁數(shù): 24/42頁
文件大小: 1350K
代理商: LP3971SQ-B410
I
2
C Register Definitions
(Continued)
Bit
2
Access
R
Name
LDO2_OK
Description
LDO_2 Output Voltage Status
0 = (VCC_LDO2) output voltage
<
90% of selected value
1 = (VCC_LDO2) output voltage
>
90% of selected value
LDO_1 Output Voltage Status
0 = (VCC_LDO1) output voltage
<
90% of selected value
1 = (VCC_LDO1) output voltage
>
90% of selected value
Reserved
1
R
LDO1_OK
0
...
...
VOLTAGE CHANGE CONTROL REGISTER 1 (VCC1) 8h’20
Bit
7
6
5
4
3
2
1
0
Designation
Reset Value
B3VS
0
B3GO
0
B2VS
0
B2GO
0
Reserved
B2VS
0
B2GO
0
0
0
VOLTAGE CHANGE CONTROL REGISTER 1 (VCC1) 8h’20 DEFINITIONS
Bit
7
Access
R/W
Name
B3VS
Description
Buck 3 Target Voltage Select
0 = Buck 3 Output Voltage to B1TV1
1 = Buck 3 Output Voltage to B1TV2
Start Buck 3 Voltage Change
0 = Hold Buck 3 Output Voltage at current level
1 = Ramp Buck 3 Output Voltage as selected by B3VS
Buck 2 Target Voltage Select
0 = Buck 2 Output Voltage to B2TV1
1 = Buck 2 Output Voltage to B2TV2
Start Buck 2 Voltage Change
0 = Hold Buck 2 Output Voltage at current level
1 = Ramp Buck 2 Output Voltage as selected by B2VS
Reserved
Buck 1 Target Voltage Select
0 = Buck 2 Output Voltage to B1TV1
1 = Buck 2 Output Voltage to B1TV2
Start Buck 1 Voltage Change
0 = Hold Buck 3 Output Voltage at current level
1 = Ramp Buck 3 Output Voltage as selected by B1VS
6
R/W
B3GO
5
R/W
B2VS
4
R/W
B2GO
3:2
1
...
...
R/W
B1VS
0
R/W
B1GO
L
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